Say you meet a stranger who is a member of a particular community of chasidus. What is the most polite and direct way to ask the person of which community they are a member? I.e. a question whose answer could be one word, such as "Munkatcher", "Gerer", or "Toldos Aharon". "What are you?" is obviously impolite and imprecise. "What kind of chasid are you?" seems only slightly less so. "Where are you from?" just doesn't express the intended question.

This is a question of social graces and terminology, not one of taxonomy.